HK1073916A1 - Low bit-rate audio coding - Google Patents

Low bit-rate audio coding

Info

Publication number
HK1073916A1
HK1073916A1 HK05106539A HK05106539A HK1073916A1 HK 1073916 A1 HK1073916 A1 HK 1073916A1 HK 05106539 A HK05106539 A HK 05106539A HK 05106539 A HK05106539 A HK 05106539A HK 1073916 A1 HK1073916 A1 HK 1073916A1
Authority
HK
Hong Kong
Prior art keywords
low bit
quantized
audio coding
rate audio
expanding
Prior art date
Application number
HK05106539A
Inventor
Mark Stuart Vinton
Michael Mead Truman
Original Assignee
Dolby Lab Licensing Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Publication of HK1073916A1 publication Critical patent/HK1073916A1/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

The perceived quality of an audio signals obtained from very low bit-rate audio coding system is improved by using expanding quantizers and arithmetic coding in a transmitter and using complementary compression and arithmetic decoding in a receiver. An expanding quantizer is used to control the number of signal components that are quantized to zero and arithmetic coding is used to efficiently code the quantized-to-zero coefficients. This allows a wider bandwidth and more accurately quantized baseband signal to be conveyed to the receiver, which regenerates an output signal by synthesizing the missing components.
HK05106539A 2002-07-16 2005-08-01 Low bit-rate audio coding HK1073916A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/198,638 US7043423B2 (en) 2002-07-16 2002-07-16 Low bit-rate audio coding systems and methods that use expanding quantizers with arithmetic coding
PCT/US2003/021506 WO2004008436A1 (en) 2002-07-16 2003-07-08 Low bit-rate audio coding

Publications (1)

Publication Number Publication Date
HK1073916A1 true HK1073916A1 (en) 2006-01-20

Family

ID=30115160

Family Applications (1)

Application Number Title Priority Date Filing Date
HK05106539A HK1073916A1 (en) 2002-07-16 2005-08-01 Low bit-rate audio coding

Country Status (16)

Country Link
US (1) US7043423B2 (en)
EP (1) EP1537562B1 (en)
JP (1) JP4786903B2 (en)
KR (1) KR101019678B1 (en)
CN (1) CN100367348C (en)
AT (1) ATE360250T1 (en)
AU (1) AU2003253854B2 (en)
CA (1) CA2492647C (en)
DE (1) DE60313332T2 (en)
HK (1) HK1073916A1 (en)
IL (1) IL165869A (en)
MX (1) MXPA05000653A (en)
MY (1) MY137149A (en)
PL (1) PL207862B1 (en)
TW (1) TWI315944B (en)
WO (1) WO2004008436A1 (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7711123B2 (en) * 2001-04-13 2010-05-04 Dolby Laboratories Licensing Corporation Segmenting audio signals into auditory events
US7240001B2 (en) 2001-12-14 2007-07-03 Microsoft Corporation Quality improvement techniques in an audio encoder
JP4859368B2 (en) * 2002-09-17 2012-01-25 ウラディミール・ツェペルコヴィッツ High-speed codec with minimum required resources providing a high compression ratio
US7610553B1 (en) * 2003-04-05 2009-10-27 Apple Inc. Method and apparatus for reducing data events that represent a user's interaction with a control interface
US7460990B2 (en) * 2004-01-23 2008-12-02 Microsoft Corporation Efficient coding of digital media spectral data using wide-sense perceptual similarity
DE102004027146B4 (en) * 2004-06-03 2014-10-30 Unify Gmbh & Co. Kg Method and apparatus for automatically setting value range limits for samples associated with codewords
US7630882B2 (en) * 2005-07-15 2009-12-08 Microsoft Corporation Frequency segmentation to obtain bands for efficient coding of digital media
US7562021B2 (en) * 2005-07-15 2009-07-14 Microsoft Corporation Modification of codewords in dictionary used for efficient coding of digital media spectral data
US7546240B2 (en) * 2005-07-15 2009-06-09 Microsoft Corporation Coding with improved time resolution for selected segments via adaptive block transformation of a group of samples from a subband decomposition
AR061807A1 (en) * 2006-07-04 2008-09-24 Coding Tech Ab FILTER COMPRESSOR AND METHOD FOR MANUFACTURING ANSWERS TO THE COMPRESSED SUBBAND FILTER IMPULSE
US7761290B2 (en) * 2007-06-15 2010-07-20 Microsoft Corporation Flexible frequency and time partitioning in perceptual transform coding of audio
US8046214B2 (en) * 2007-06-22 2011-10-25 Microsoft Corporation Low complexity decoder for complex transform coding of multi-channel sound
US7885819B2 (en) * 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
US8249883B2 (en) * 2007-10-26 2012-08-21 Microsoft Corporation Channel extension coding for multi-channel source
EP2144230A1 (en) * 2008-07-11 2010-01-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Low bitrate audio encoding/decoding scheme having cascaded switches
ES2654433T3 (en) 2008-07-11 2018-02-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio signal encoder, method for encoding an audio signal and computer program
MY154452A (en) 2008-07-11 2015-06-15 Fraunhofer Ges Forschung An apparatus and a method for decoding an encoded audio signal
WO2010028301A1 (en) * 2008-09-06 2010-03-11 GH Innovation, Inc. Spectrum harmonic/noise sharpness control
US8532998B2 (en) * 2008-09-06 2013-09-10 Huawei Technologies Co., Ltd. Selective bandwidth extension for encoding/decoding audio/speech signal
US8532983B2 (en) * 2008-09-06 2013-09-10 Huawei Technologies Co., Ltd. Adaptive frequency prediction for encoding or decoding an audio signal
WO2010031003A1 (en) * 2008-09-15 2010-03-18 Huawei Technologies Co., Ltd. Adding second enhancement layer to celp based core layer
US8577673B2 (en) * 2008-09-15 2013-11-05 Huawei Technologies Co., Ltd. CELP post-processing for music signals
US20100106269A1 (en) * 2008-09-26 2010-04-29 Qualcomm Incorporated Method and apparatus for signal processing using transform-domain log-companding
TWI419148B (en) * 2008-10-08 2013-12-11 Fraunhofer Ges Forschung Multi-resolution switched audio encoding/decoding scheme
EP2315358A1 (en) * 2009-10-09 2011-04-27 Thomson Licensing Method and device for arithmetic encoding or arithmetic decoding
CA2862715C (en) 2009-10-20 2017-10-17 Ralf Geiger Multi-mode audio codec and celp coding adapted therefore
US8280729B2 (en) * 2010-01-22 2012-10-02 Research In Motion Limited System and method for encoding and decoding pulse indices
US8989884B2 (en) * 2011-01-11 2015-03-24 Apple Inc. Automatic audio configuration based on an audio output device
KR20140117931A (en) 2013-03-27 2014-10-08 삼성전자주식회사 Apparatus and method for decoding audio
WO2014159898A1 (en) * 2013-03-29 2014-10-02 Dolby Laboratories Licensing Corporation Methods and apparatuses for generating and using low-resolution preview tracks with high-quality encoded object and multichannel audio signals
EP2992605B1 (en) * 2013-04-29 2017-06-07 Dolby Laboratories Licensing Corporation Frequency band compression with dynamic thresholds
WO2016041204A1 (en) * 2014-09-19 2016-03-24 Telefonaktiebolaget L M Ericsson (Publ) Methods for compressing and decompressing iq data, and associated devices
TWI758146B (en) 2015-03-13 2022-03-11 瑞典商杜比國際公司 Decoding audio bitstreams with enhanced spectral band replication metadata in at least one fill element
MX2018003529A (en) * 2015-09-25 2018-08-01 Fraunhofer Ges Forschung Encoder and method for encoding an audio signal with reduced background noise using linear predictive coding.
US10861475B2 (en) 2015-11-10 2020-12-08 Dolby International Ab Signal-dependent companding system and method to reduce quantization noise
CN110992672B (en) * 2019-09-25 2021-06-29 广州广日电气设备有限公司 Infrared remote controller learning and encoding method, infrared remote controller system and storage medium
DE102022200893A1 (en) * 2022-01-27 2023-07-27 Robert Bosch Gesellschaft mit beschränkter Haftung Method of encoding and decoding data

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3684838A (en) * 1968-06-26 1972-08-15 Kahn Res Lab Single channel audio signal transmission system
US4272648A (en) * 1979-11-28 1981-06-09 International Telephone And Telegraph Corporation Gain control apparatus for digital telephone line circuits
US4273970A (en) * 1979-12-28 1981-06-16 Bell Telephone Laboratories, Incorporated Intermodulation distortion test
GB8330885D0 (en) * 1983-11-18 1983-12-29 British Telecomm Data transmission
GB8421498D0 (en) * 1984-08-24 1984-09-26 British Telecomm Frequency domain speech coding
US4935963A (en) * 1986-01-24 1990-06-19 Racal Data Communications Inc. Method and apparatus for processing speech signals
US5109417A (en) * 1989-01-27 1992-04-28 Dolby Laboratories Licensing Corporation Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
US5054075A (en) * 1989-09-05 1991-10-01 Motorola, Inc. Subband decoding method and apparatus
US5127021A (en) * 1991-07-12 1992-06-30 Schreiber William F Spread spectrum television transmission
US5394508A (en) * 1992-01-17 1995-02-28 Massachusetts Institute Of Technology Method and apparatus for encoding decoding and compression of audio-type data
JP3527758B2 (en) * 1993-02-26 2004-05-17 ソニー株式会社 Information recording device
JP3685823B2 (en) * 1993-09-28 2005-08-24 ソニー株式会社 Signal encoding method and apparatus, and signal decoding method and apparatus
TW327223B (en) 1993-09-28 1998-02-21 Sony Co Ltd Methods and apparatus for encoding an input signal broken into frequency components, methods and apparatus for decoding such encoded signal
JPH0918348A (en) * 1995-06-28 1997-01-17 Graphics Commun Lab:Kk Acoustic signal encoding device and acoustic signal decoding device
JP3475985B2 (en) * 1995-11-10 2003-12-10 ソニー株式会社 Information encoding apparatus and method, information decoding apparatus and method
DE10010849C1 (en) * 2000-03-06 2001-06-21 Fraunhofer Ges Forschung Analysis device for analysis time signal determines coding block raster for converting analysis time signal into spectral coefficients grouped together before determining greatest common parts

Also Published As

Publication number Publication date
TW200406096A (en) 2004-04-16
AU2003253854B2 (en) 2009-02-19
DE60313332D1 (en) 2007-05-31
DE60313332T2 (en) 2008-01-03
US20040015349A1 (en) 2004-01-22
JP4786903B2 (en) 2011-10-05
ATE360250T1 (en) 2007-05-15
IL165869A (en) 2010-06-30
EP1537562B1 (en) 2007-04-18
WO2004008436A1 (en) 2004-01-22
PL207862B1 (en) 2011-02-28
KR101019678B1 (en) 2011-03-07
US7043423B2 (en) 2006-05-09
CN1669072A (en) 2005-09-14
IL165869A0 (en) 2006-01-15
CN100367348C (en) 2008-02-06
AU2003253854A1 (en) 2004-02-02
MXPA05000653A (en) 2005-04-25
EP1537562A1 (en) 2005-06-08
CA2492647A1 (en) 2004-01-22
TWI315944B (en) 2009-10-11
MY137149A (en) 2008-12-31
KR20050021467A (en) 2005-03-07
CA2492647C (en) 2011-08-30
JP2005533280A (en) 2005-11-04
PL373045A1 (en) 2005-08-08

Similar Documents

Publication Publication Date Title
HK1073916A1 (en) Low bit-rate audio coding
MY143951A (en) Context-based encoding and decoding of signals
ATE319162T1 (en) BROADBAND SIGNAL TRANSMISSION SYSTEM
TW200706013A (en) Dynamic image encoding device, dynamic image decoding device, dynamic image encoding method, dynamic image decoding method, dynamic image encoding program, and dynamic image decoding program
JP2003514266A5 (en)
JPH11500291A (en) Method and apparatus for encoding audio signals
DE69811394D1 (en) ADAPTIVE ENTROPY CODING UNDER ADAPTIVE QUANTIZATION FOR VIDEO SIGNAL ENCODING SYSTEMS AND METHODS
PL1866912T3 (en) Multi-channel audio coding
EP0768780A3 (en) Method and apparatus for wavelet based data compression having adaptive bit rate control for compression of digital audio or other sensory data
WO2006004847A3 (en) Method of data compression including compression of video data
WO2003077425A1 (en) Digital signal encoding method, decoding method, encoding device, decoding device, digital signal encoding program, and decoding program
AU4218299A (en) System and method for masking quantization noise of audio signals
RU2004119838A (en) SIGNAL CODING
CR20220589A (en) Video encoder, video decoder, methods for encoding and decoding and video data stream for realizing advanced video coding concepts
WO2003067763A3 (en) Video compression using analytical entropy coding
AU2018289986B2 (en) Audio signal encoding and decoding
WO2005078937A3 (en) A method to reduce the memory requirement of the deinterleaver within a digital audio broadcast radio receiver using data compression
KR0129781B1 (en) Multi channel stereo signal compression circuit
KR970073105A (en) FRAME SIZE QUADRUPLER FOR VIDEO CODEC
TWI263933B (en) Multi-quantizer coding/decoding apparatus and method
WO2009038158A1 (en) Audio decoding device, audio decoding method, program, and mobile terminal
TW200612687A (en) Communication system capable of correcting errors and non-binary convolution decoding method

Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20170708